package com.tianjian.myblog.web.admin;

import com.tianjian.myblog.model.Tag;
import com.tianjian.myblog.model.Type;
import com.tianjian.myblog.service.TagService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.validation.Valid;


@Controller
@RequestMapping("/admin")
public class TagController {


    @Autowired
    private TagService tagService;

    @GetMapping("/tags")
    public String tags(@PageableDefault(size = 3,sort = {"id"},direction = Sort.Direction.DESC) Pageable pageable,
                       Model model){


        model.addAttribute("page",tagService.findTag(pageable));

        return "/admin/tags";
    }


    @GetMapping("tags/input")
    public String input(Model model){

        model.addAttribute("tag",new Tag());
        return "admin/tags-input";

    }

    @PostMapping("/tags")
    public String post(@Valid Tag tag, BindingResult result, RedirectAttributes attributes){


        Tag tag1 = tagService.findByName(tag.getName());
        if(tag1!=null){
            result.rejectValue("name","nameError","不能重复添加标签");
        }
        if(result.hasErrors()) {
            return "admin/tags-input";
        }
        Tag t = tagService.saveTag(tag);

        if(t == null) {
            attributes.addFlashAttribute("message","新增失败");
        }
        else {
            attributes.addFlashAttribute("message","新增成功");
        }
        return "redirect:/admin/tags";

    }

    @GetMapping("/tags/{id}/input")
    public String input(@PathVariable Long id,Model model) {

        model.addAttribute("tag",tagService.findOneTag(id));
        return "admin/tags-input";

    }

    @PostMapping("/tags/{id}")
    public String editInput(@Valid Tag tag,BindingResult result,@PathVariable Long id,RedirectAttributes attributes){

        Tag tag1 = tagService.findByName(tag.getName());
        if(tag1!=null){
            result.rejectValue("name","nameError","不能重复添加标签");
        }

        if(result.hasErrors()) {
            return "/admin/tags-input";
        }

        Tag t = tagService.updateTag(id,tag);

        if(t==null){
            attributes.addFlashAttribute("message","更新失败");
        } else {
            attributes.addFlashAttribute("message","更新成功");
        }

        return "redirect:/admin/tags";
    }

    @GetMapping("tags/{id}/delete")
    public String delete(@PathVariable Long id,RedirectAttributes attributes){

        tagService.deleteTag(id);

        attributes.addFlashAttribute("message","删除成功");

        return  "redirect:/admin/tags";
    }





}
